Fluid-tight motion-transmitting device



May 13, 1930. J, wso 1,758,287

FLUID TIGHT MOTION TRANSMITTING DEVICE Filed June 18. 1928 2 Sheets-Sheet l 2 I &

oZ aA/u-mm/ WWW May 13,1930. 1 J. LAWSON ,7 7

' FLUID TIGHT MOTION TRANSMITTING DEVICE Filed June 18, 1928 2 .She ets-Sheet 2 I I Patented May 13, 1930 i v UNITED STATES PATENT 1 OFFICE JOSEPH LAWSON, F ION DON, ENGLAND, A SSI G -NOBTO ASIATIO PETROLEUM COMPANY,

LIMITED, OF LONDON, ENGLAND FLUID-TIGHT MOTION-TRANSMITTING nnvrcn Application filed June is, 1928, Serial No. 286,478, and in Great Britain Jun 29, 1927.

This invention relates to improvements in fluid-tight motion transmittingdevices, of the kind comprising a flexible tube sealed at one end into or around an aperture formed in a fluid containing chamber and closed at the other end, and is for use with apparatus in which motion is transmitted from" a'selfcontained mechanical unit'to a second unit located outside the first mentioned unit, as, for example, in the casewhere motion is transmitted from a change-over mechanism,

for controllingthe supply of liquid'to a pair of containers, to a mechanism for indicating the quantity of liquid delivered The object of the present invention is to provide in apparatus of this kind an arrangement whereby the external unit may be detached from the self-contained unit without affecting the fluid-tight joint. and without affecting the operation of the self-contained According to the present invention the flexible tubeseals an aperture formed in the case of the self-contained unit and detachably interconnected means are provided for transmitting the motion between the selfcontained andexternal units.

The detachably interconnected means preferably comprises a rod in engagement at one end with a cap sealing one end of the flexible tube and having at its other end a'pin portion adapted to extend within a socket operatively connected to the external unit.-

Preferably, in order to increase the flexibility of the tube, it is transversely corrugated.

In the accompanying drawing, Figure 1 is a vertical section illustrating the invention applied to a plugcock; Figure 2 is anelevation, partly in section, looking from the right of Figure 1' and showing the parts constituting the invention and Figure 3 is a diagrammatic view of apparatus wherein the invention is employed.

' Referring more particularly to Figure 3, which indicates diagrammatically and conventionally the type of apparatus to which the invention relates, A B are two containers, adapted to be supplied with liquid delivered froma pump 0, the'supply and discharge of tainers'in ber in which is located any known kind of liquid to and from the containers being controlled by a change over mechanism D. E 7 1s an indicating mechanism which is actuated by the operation of the mechanism D and indicates thequantity of liquid delivered;

Referring now to Figures 1 and 2, the said change over mechanlsm D comprises any known kind ofplug cock 1 rotatably mounted in 1a casingor body 2 having a chamber 3 to which liquidis suppliedfrom the said apparatus for rautomatically efi'ecting, in

known'manner, the reversal of the plug cock through engagement with a jaw 7 ofthe'latend of the plug cock 1 is formed with a cam 8 upon-which rests a projection 9 on'a sheath 10 having further" projections 11' adapted gradually to be engaged by the cam 8.

U The lower end of the sheath 1O is'formerl with a sleevelQ which receives a cup-shaped member 13 to which is secured, as bysoldering, the upper end of a flexible corrugated metallic tube 14, the lower end of whichis secured, as by soldering, to a plug 15 bolted on to the casing 2, packing 16 being interposed'between said plug and casing.

Extending'into a recess formed in the cup shaped member 13 is the head 17 of a motion transmitting rod 18 which extends with substantial clearanc'e' through the tube 14 and is provided with a head 19 extending into a socket formed in a member 20. The member 20'is pivotally mounted on pins 21 which are secured in a plug 22by means of, a split spring ring 23, the lower end of-said member 20 "extending downwardly to engage mechanism for actuating the aforesaid conventional indicating mechanism E located within a casing Q l-to which the plug 22 is ter when thepressure of the'liquid rises due U to the filling of a container, the liquid pres sure being transmitted from the chamber?- to the chamber 5 through a passage 6. I The In operation when the plug cock 1 is re-' versed, the cam 8 gradually moves into engagement with the projections 11 and thereafter rocks the cam sheath 10 and the rod 18,

which latter transmits the motion to the memr 20 to ctuate the mechanism for actuating the indicating mechanism, the tube'14, by

reason of its flexibility, permitting saidmovement. It will be seen that the head and socket connection 19, 20 permits'the external indiflexible tube sealing an aperture in said body.

and a motion transmitting device comprisdetachably interconnected means external to said chamber, for transmitting movement between said self-contained and external units,said device passing through and being secured to said tube,

2. The combination of a. self-contained mechanical unit having a body defining a chamber adapted to contain fluid, a second unit external-to said self-contained unit, a

flexible tube one end of which is secured in an aperture formed in saidbody, a member secured to and sealing the other end of said tube,said member being in operative relationshipiwith said self-contained mechanical unit, and detachably inter-connected means for transmitting motion between said selfcontained and external units, said device be ing in substantial engagement With said memher and extending through the open end of saidtube- A q 3. The combination ofa self-contained mechanical unit having a body defining a chamber adapted to contain arfluid, a second unit external tosaid'self-contained unit, a flexible tube sealing an aperture insaid body, a motiontransmittingdevice for transmitting movement to said external unit and comprising detachably interconnected means external to said chamber, said device passing through and being secured to said tube, a cam sheath in engagementwith said motion transmitting device, and a cam operable by the Self-Contained mechanical unit and adapted progressively to move into contact with said cam sheath. v

4. They combination of; a self-contained mechanical unit having a body defining a chamber adapted to contain a fluid, a second unit external to said self contained unit, a flexible tube one end of which is secured in an aperture in said body, a member. secured to and sealing the other end of saidtube, a

c sheath in 'engagement with said member,

a cam operable by said self-contained unit and adapted progressively to move into contact Y with said cam sheath, and detachably inter- 1 connected means for transmitting movement to saidexternal unlt, said means be ng 1n substantial engagement with sald member and extending through the open end of said tube. Y

' 5. The combination of a self-contained chamber, for transmitting movement between said self contained and external units, said devicepassing through and being secured to said tube.

6. The combination of a self-contained mechanical unit having .a body defining a chamber adapted to contain a fluid, a second unit external to said self contained unit,

body, a motion transmitting device for sock- .a flexible tube sealing an aperture in said e V et connection external to :said chamber,

said device passing through and being-secured to said tube,ya cam sheath in engage-.

ment with said motion transmitting device, and a cam operable by the self-contained mechanical unit and'adapted progressively to move into contact with said cam sheath.

7-. The combination of p a self-contained mechanical unit having a body defining a chamber adapted .to contain fluid, a second unit external to. said self-contained unit, a flexible tube one'end of which is secured in an aperture formedin said body, a member secured to and sealing the other end of said tube, said member being in operative relationship with said self-contained mechanical unit, anddetachably interconnected means for transmitting motion between said self-con- Ytained and external units, said device being in substantial engagement with said member and extending through theopen end of said tube, said detachably interconnected means comprising a pin and socket connection.

8. The combination of. a self-contained mechanical un'ithaving a body defining a chamberladapted to contain a fluid, asecond unit externalto said self-contained unit, a

flexible-tube one end ofwhich is secured in ment to said external unit, said means be ing in substantial engagement with said member-and extending through the open end a chamber adapted. to containthe liquid, a

second unit external to said self-contained unit and comprising an indicat ng mechanism, a flexible tube sealing an aperturen for transmitting 'movement from" said control means to said indicating mechanism, and comprising detachably interconnected means external to said chamber, said device passing through and being'secured to said tube. a

10. The combination of a pair of measuring containers, a self-contained mechanical unit comprising. means for controlling the supply and discharge of liquid to and from said containers, said unit having a body providing a chamber adapted to contain-the liquid, a second unit external to said self- 7 contained unit and comprising an indicating mechanism, a flexible tube one end of which is secured in an aperture formed in the body, a member secured to andsealing the other end of said tube, said member being in operative relationship with said control means, and detachably interconnected means for transmitting motion between said control b means and said indicating mechanism, said means being in substantial engagement with said member and extending through the open end of said tube.

11. The combination of a pair of measuringcontainers, a self-contained mechanical unit comprising means for controlling the supply and discharge of liquid to and from said containers, said unit having a body providing a chamber adapted to containthe.

liquid, a second unit external to said selfcontained unit and comprising an indicating mechanism, a flexible tube sealing an aperture in said body, a motion transmitting device for transmitting movement to said indicating mechanism and comprising detachably interconnected means external to. said chamber, said device extending into said chamber, and being secured to said tube, a cam sheath in engagement with said motion transmitting device, and a cam operable by said control means and adapted progressively to move into contact with said cam sheath.

12. The combination of a pair of measuring. containers, a self-contained mechanical unit comprising. means for controlling the supply and discharge of liquid to and from said containers, said unit having a body'providinga chamber adapted to contain the liquid, a second unit external to said self-' contained unit and comprising an indicating mechanism, a flexible tube one end of which is secured in an aperture in said body,a member secured to and sealing the other end of said-tube, a cam sheath in engagement with said: member, a cam operable by the control means and adapted progressively to move into contact with said cam sheath, and detachably interconnected means for transmitting movement, to'said indicating mechanism, said means being in substantial engagement with said member and extending :through the open end of said tube. said body, and a motiontransmitting device 13. The combination of a pair of-measuring containers, a self-contained mechanical unit comprising means forcontrolling the supply and discharge of liquid toand from said containers, said unit'having a body providing a chamber adapted tojcontain the liquid, 2. secondu'nit external to said selficontained unit and comprising an indicating mechanism a flexible tube sealin r ana erture in said body, and a motion transmitting device for transmitting movement from said control means to said ndicatingmechanism,

and comprising a pin and socket connection uring containers,a self-contained mechanical .llIlltcomprising means for controlling the supply and discharge of liquid to and from said containers, said unit having a bodyprovidinga chamber adapted to; contain the liquid,'l a second unit'external' to said selfcontained unit and comprising an indicatingmechanism, a flexible "tube sealing an aper- Itureinsaid body,'a motion transmitting del vice for transmitting'movement to said indicating mechanism and comprising a pin and socket connection, external to said chamber, said device extending into said chamber and beingsecured to said tube," a cam sheath in engagement with said motion transmitting device, and a cam operable by said control means and adaptedprogressively to move into contact with said cam sheath.

15. The combination of a pair of measuring containers, a self-contained mechanical unit comprising meansfor controlling the supply and discharge of liquid to andirom said containers, said unit having a body providing a chamber adapted. to contain the liquid, a second unit external to said self-containedunit and. comprising an indicating mechanism, a flexible tube one end of which ;issecured in an aperture formed in the body,

a member'secured to and sealing the other end of said tube, said member being in operative relationship with said control means, and detachably interconnected meansfor trans- .mitting motion betweensaid control means and: said indicating mechanism, said means beingin substantial engagement with said member and extending through the open end of said tube, said detachably interconnected liquid, a second unit external to said self-contained unit vand comprising an indicating mechanism, a flexible tube one end of which secured 1n an aperture in said body, a membersecured to and sealing the other end of p a secured to and sealingthe other end of said said tube, a cam sheath in engagement with said member, a cam operable by the control I means and adapted progressively to move into contact with said cam sheath, and detachably interconnected means for transmitting movement to said indicating mechanism, said means being in substantial engagement with said member and extending through theopen end of said tube, said detachably interconnected means comprising a pin and socket connection.

'17, The combination of a self-contained 0nd unit external to said self-contained unit,

arraaazw externalxto said chamber, said device passing throughand being secured to'said tube;

20. The combination of apair ofmeasuring containers, a self-contained mechanical unit comprising means for controlling the containedunit'and comprising an indicating mechanism, a flexible, metallic, transversely corrugated tube one end ofwhich is secured in, an aperture formed in the body, a member tube, said member beingrin operative relationship with said control means, and detachably interconnected means for transmitting motion between said control means and said indicating mechanism, said means being-in substantial engagement rwithr said member tube. V V

In testimony that I claim the. foregoing as my inventionv Ijhave signed my name this firstday of June, 1928, a V r JOSEPH LAWSON a flexible, metallic, transversely corrugated ;f a tube sealing an aperture in said body and a I motion transmitting device comprising detachably interconnected means external to said chamber, for transmitting movement between said self-contained and external or units, said device passing through and being secured to said tube.

18.-'The combination of a self-contained L I i mechanical unit having a body defining a chamber adapted to contain fluid, a, second 7 unit external to said self-contained unit, a

flexible, metallic, transversely corrugated tube one end of which is secured in an aper-V V ture formed insaid body, a member secured to and sealing the otherend of said tube, said member-being in operative relationship with said self-contained mechanical, unit, and detachably interconnected means for transmitting motion between said self-contained f and external units, said device being in substantial engagement with said member and extending through t-heopen end of said tube.

19. The combination of a pair of measuring containers, a self-contained mechanical unit comprising means for controlling the supply and discharge of liquid to and from said containers, said unit having a body providing a chamber adaptedto contain the liquid, a second unit external tosaid selfcontained unit and comprising an 1nd1cat1ng mechanism, a flexible, ,metalllc, transversely corrugated tube sealing an aperture insaid body, and a motiontransmitting device 'for transmitting movement 'lfromi'said control meansto said indicating mechanism, and

comprising detachably interconnectedmeans Yr 

